1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
meriva
4 years ago
8

The element rhenium (Re) exists as two stable isotopes and 18 unstable isotopes. Rhenium-185 has in its nucleus

Chemistry
1 answer:
sweet [91]4 years ago
8 0

Answer:

d. 75 protons, 110 neutrons

Explanation:

In an isotope, the number next to the number of the atom is the mass number (Protons + neutrons). Rhenium has as atomic number 75, that means Rhenium has <em>75 protons</em>. As atomic mass, 185, is the sum of protons and neutrons, number of neutrons is:

185 - 75 = <em>110 neutrons</em>

<em />

Thus, right answer is:

<em>d. 75 protons, 110 neutrons </em>

<em />

You might be interested in
Which of the following are types of muscle? *<br> Tendon<br> Cardiac<br> Smooth<br> skeletal
Wewaii [24]

Answer:

i'm pretty sure that the smooth,skeletal,and the cardiac are muscles.hope that helps!

Explanation:

3 0
3 years ago
Read 2 more answers
A doctor's Order is 0.125 g of ampicillin. The liquid suspension on hand contains 250 mg/s. How many milliliters (mL) of the sus
Molodets [167]

Answer:

c) 2.5 mL

Explanation:

Solution

Doctors order = 0.125g

and

The liquid suspension concentration = 250 mg/5ml

= 0.250g/5ml

Or 0.05g/ml

Amount of ml of suspension required = 0.125g/(0.05g/ml) = 2.5ml

7 0
3 years ago
HIII PLEASE HELP BRUUH
leonid [27]

1. 2Al(s)+6HCl(aq)⇒2AlCl₃(aq)+3H₂(g)

2. 2AgNO₃ (aq) + Cu (s)⇒Cu(NO₃)₂ (aq) + 2Ag (s)

3. 2C₃H₈O(l) + 9O₂(g) ⇒ 6CO₂(g) + 8H₂O(g)

<h3>Further explanation</h3>

There are several reactions that can occur in a chemical reaction: single replacement, double replacement, synthesis, decomposition or combustion, etc.

1.Al(s)+HCl(aq)⇒AlCl₃(aq)+H₂(g)

type : single replacement

balance :

2Al(s)+6HCl(aq)⇒2AlCl₃(aq)+3H₂(g)

2. AgNO₃ (aq) + Cu (s) ⇒ Cu(NO₃)₂ (aq) + Ag (s)

type : single replacement

balance :

2AgNO₃ (aq) + Cu (s)⇒Cu(NO₃)₂ (aq) + 2Ag (s)

3. C₃H₈O + O₂ ⇒ CO₂ + H₂O

type : combustion of alcohol

balance :

2C₃H₈O(l) + 9O₂(g) ⇒ 6CO₂(g) + 8H₂O(g)

4 0
3 years ago
A(n) _____ is an organic compound that contains a nitrogen atom bonded to one, two, or three carbon atoms.
Katyanochek1 [597]

Tertiary Amine

          The reason Why it is Tertiary Amine is because it has three carbons and one nitrogen. 

7 0
3 years ago
Read 2 more answers
Draw the product of the reaction between CH3CH=CHCH3 and H2 under a platinum catalyst.
Pani-rosa [81]

Answer:

CH₃CH₂-CH₂CH₃

Explanation:

When an alkene, R-CH=CH-R reacts with H₂ in a Pt catalyst, the analogue alkane, R-CH₂-CH₂-R, is produced (Hydrogenation of alkenes via Pt/Pd catalyst)

Thus, the reaction of CH₃CH=CHCH₃ with H₂ under a platinum catalyst produce:

<h3>CH₃CH₂-CH₂CH₃</h3>

The analogue alkane

4 0
3 years ago
Other questions:
  • What is the primary unit of mass
    6·1 answer
  • Which is the least reliable method for identifying a mineral
    5·2 answers
  • the new york stock exchange closed shortly after the planes struck the towers they did not reopen until ?
    9·1 answer
  • Energy release is to condensation as energy input is to _________.
    10·2 answers
  • Which reaction will occur?
    8·2 answers
  • in a Grignard reagent, the carbon bonded to the magnesium has a partial ________ charge, because carbon is ________ electronegat
    14·1 answer
  • Pomocy zadanie na jutro chemia czesc 1 str 71 zadania 48 i 49
    6·1 answer
  • please help.. Which of the following events is most likely to cause an environmental disturbance in a grassland biome? A. Earthq
    6·1 answer
  • Which of the following has the highest concentration of H+ ions?
    14·1 answer
  • Hurry hurry hurry plz plz
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!